You shouldn't be really scared until all devices follow the pattern of the iPhone (and maybe new flagship Android phones too, I'm not in that camp).

New iPhones are expensive, more than $1000. Yet most people who get them finance it through their cellular carrier, usually 2 year plans, so it's just $30-$50 tacked on to the monthly cellphone bill. So ... no one cares unless it's going to double their bill.

Let's say the RAMopocalypse and other AI-driven chip pressues drives everything up even more; let's say now-cheap TVs are now $2000 or $3000. No biggie. Your cellphone company can offer you an eSIM-locked TV with bundled network and services, on a 5 year plan with free lifetime service and replacement, adding just $30-$40 to your bill for 5 years. Maybe it will include something like Family Tracker Life360 Intercom as a value-add - talk to your children to/from the TV to/from any phone on your plan, anywhere, anytime. Safety, etc.

Same thing with your laptop, home IoT/security devices, etc.

If ATSC 3.0 dies and gives way to 5g Broadcast, it'll be another enabler for something like this.

That's when the real lock-in will happen.